Combine and rearrange lists

v = {3, 1, 3, 2, 5, 4}

{3, 1, 3, 2, 5, 4}

Sort[v]

{1, 2, 3, 3, 4, 5}

Union[v]

{1, 2, 3, 4, 5}

v

{3, 1, 3, 2, 5, 4}

v = Union[v]

{1, 2, 3, 4, 5}

v

{1, 2, 3, 4, 5}

Reverse[v]

{5, 4, 3, 2, 1}

RotateLeft[v, 2]

{3, 4, 5, 1, 2}

RotateRight[v, 2]

{4, 5, 1, 2, 3}

PadLeft[v, 10, x]

{x, x, x, x, x, 1, 2, 3, 4, 5}

Partition[v, 2]

{{1, 2}, {3, 4}}

Partition[v, 2, 1]

{{1, 2}, {2, 3}, {3, 4}, {4, 5}}

Split[{1, 4, 1, 1, 1, 2, 2, 3, 3}]

{{1}, {4}, {1, 1, 1}, {2, 2}, {3, 3}}

Flatten[{{a, b}, {c, {d}, e}, {f, {g, h}}}]

{a, b, c, d, e, f, g, h}

Join[{a, b}, {c, d, e}, {f, g, h}]

{a, b, c, d, e, f, g, h}